Added build script

package.json

@@ -4,7 +4,8 @@
   "description": "The document generation server for the LfK! runner system. This generates certificates, sponsoring aggreements and more",
   "main": "src/app.ts",
   "scripts": {
-    "dev": "nodemon src/app.ts"
+    "dev": "nodemon src/app.ts",
+    "build": "rimraf ./dist && tsc"
   },
   "repository": {
     "type": "git",
@@ -42,6 +43,7 @@
     "cors": "^2.8.5",
     "dotenv": "^8.2.0",
     "express": "^4.17.1",
+    "reflect-metadata": "^0.1.13",
     "routing-controllers": "^0.9.0-alpha.6",
     "routing-controllers-openapi": "^2.2.0"
   },